Tuesday, August21, 2018 L-36.com


Marine Weather and Tides
Hull, MA

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7/21/2018 Trying to make page Mobile Friendly

Sunrise 5:56AMSunset 7:36PM Tuesday August 21, 2018 10:03 PM EDT (02:03 UTC) Moonrise 4:40PMMoonset 1:29AM Illumination 81% Phase: Waxing Gibbous; Moon at 11 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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ANZ230 Boston Harbor- 716 Pm Edt Tue Aug 21 2018
Tonight..SE winds 5 to 10 kt. Waves 2 to 3 ft. A chance of tstms with a slight chance of showers after midnight. Some tstms may produce heavy rainfall after midnight.
Wed..SE winds 5 to 10 kt, becoming sw in the afternoon. Gusts up to 20 kt. Waves 2 to 3 ft. Patchy fog. Showers with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 nm.
Wed night..NW winds 5 to 10 kt. Waves 2 to 3 ft. A chance of tstms.
Thu..NW winds around 5 kt. Waves around 2 ft.
Thu night..W winds around 5 kt. Waves 1 foot or less.
Fri..W winds around 5 kt, becoming S around 5 kt in the afternoon. Waves 1 foot or less.
Fri night..SW winds around 5 kt. Waves 1 foot or less.
Sat..SW winds around 5 kt. Waves 1 foot or less.
Sat night..SW winds 5 to 10 kt. Waves 1 foot or less.
Sun..SW winds 5 to 10 kt with gusts up to 20 kt. Waves 1 foot or less.
Sun night..SW winds 5 to 10 kt. Waves 1 foot or less. Winds and waves higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height.
ANZ200 716 Pm Edt Tue Aug 21 2018
Synopsis for massachusetts and rhode island coastal waters.. A warm front approaches tonight from the sw and will be accompanied by areas of fog and showers late, along with isolated tstms. The front lifts north Wed followed by a cold front from the W Wed afternoon which will be accompanied by another round of showers with isolated tstms. High pres over the ohio valley Thu builds east over new england through Fri. The high will shift offshore Sat and Sun. For information on possible hazardous weather beyond the 24-36 hour forecast period, please visit www.weather.gov/boston and follow the current hazards link above the map on the left.


7 Day Forecast for Marine Location Near Hull, MA
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location: 42.32, -70.92     debug


Area Discussion for - Boston, MA
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Fxus61 kbox 212314
afdbox
area forecast discussion
national weather service boston norton ma
706 pm edt Tue aug 21 2018

Synopsis
A low pressure system will bring two rounds of scattered showers
and embedded thunderstorms. The first very late tonight into
Wednesday morning, then a second round Wednesday afternoon along
with the return of high humidity. High pressure will then
follow, bringing mainly dry and comfortable weather Thursday
and Friday. Dry weather will likely persist through the weekend
although it will turn a bit warmer. Very warm to hot
temperatures along with humid conditions may return by early
next week.

Near term until 6 am Wednesday morning
705 pm update...

dry weather persists this evening, but low clouds will continue
to increase in coverage and may see some fog develop too with
cooling boundary layer increasing low level moisture.

Appears the threat for showers and embedded t-storms will be
mainly after 2 or 3 am across interior southern new england and
near daybreak along the coastal plain. Main concern continues to
be brief heavy rain localized street flooding which may impact
part of the morning commute. Odds favor storms being sub-severe
as surface instability appears to lag behind warm front higher
low level helicity. Nonetheless... Given we have a modest LLJ 70+
dewpoints working northward along with a warm front can not
rule out the low risk for an isolated severe t-storm very
localized wind damage. While unlikely, this does include the
low risk for a brief tornado waterspout.

Previous discussion:
overnight, the main concerns will be the progress of a low
pressure and its warm front. Have high confidence in this low
pressure moving through the great lakes into canada. Have lower
confidence in the timing of a warm front. Many members of the
21 12z guidance suite suggest this front could move into
northern new england before daybreak. Thinking is this likely a
bit too quick. Have more confidence in a warm frontal passage in
the 8-11 am Wednesday time range.

This could be key to weather outcomes. The higher dew points
will be south of this warm front. These higher dew points will
provide the fuel for local downpours, as well as lowering cloud
bases. Some of the higher resolution short-term guidance suggest
high values of shear in the 0-1 km layer. Thus, still need to
be wary of rotating thunderstorms.

A caveat to this will be the time of day. Instability should not
be very high overnight, but would be a little higher if our
region can tap into the higher dew points south of the warm
front. At this point, have much more confidence in the potential
for locally heavy rainfall.

Short term 6 am Wednesday morning through Wednesday night
* a few strong to severe storms possible
* localized street flooding possible, too
Wednesday...

once our region firmly gets into the warm sector, looking at a
strong southerly low level jet to help recharge the instability
for Wednesday afternoon. Current timing for a cold front is
during the afternoon and evening. The quicker sunshine develops
in the morning, the greater the risk for strong to severe
thunderstorms during the afternoon and evening.

Otherwise, still expecting another day of higher heat and
humidity. This should start to an end later Wednesday night, as
drier air arrives behind a cold front.

Long term Thursday through Tuesday
Highlights...

* dry and comfortable weather Thu into the weekend
* very warm to hot humid weather likely returns early next week
Thursday and Friday... .

Large high pressure will be in control of our weather Thursday
and Friday. This will bring rather cool nights with lows mainly
in the 50s... But some upper 40s possible in the normally coolest
outlying locations. Highs should be in the upper 70s to the
lower 80s with plenty of sunshine low humidity.

Saturday and Sunday...

the high pressure system slowly moves off the coast this
weekend. However, mainly dry weather will likely prevail with
the lack of synoptic scale forcing. Temperatures will also
moderate a bit, mainly looking at highs in the lower to middle
80s.

Monday and Tuesday...

upper level ridge to our south will pump a west southwest flow
of unseasonable warmth humidity into southern new england early
next week. This is supported by most long range guidance, but
uncertainty in regards to just how above normal temperatures
get. The potential exists for a return of 90+ degree heat. There
probably will also be at least some risk for a few
thunderstorms, but low confidence especially in regards to
timing.

Aviation 00z Wednesday through Sunday
Forecaster confidence levels...

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term through Wednesday night ...

tonight... Moderate confidence. Low end MVFR-ifr become
widespread yet again but timing remains uncertain. Lifr
conditions are possible too particularly along portions of the
coast high terrain in low clouds and fog. Showers and embedded
t-storms with locally heavy rain overspread the region from
southwest to northeast between 6z and 12z. Llws possible toward
daybreak.

Wednesday... Moderate confidence. Widespread shra with embedded
tsra should end during the morning from west to east.

Additional, but more hit and miss showers and t-storms expected
to develop during the afternoon. Lower CIGS vsbys should improve
to perhaps mainlyVFR-MVFR by mid to late afternoon, but that will
be outside of any additional scattered showers and thunderstorms.

Wednesday night...

mainlyVFR.

Kbos terminal... Moderate confidence in taf.

Kbdl terminal... Moderate confidence in taf.

Outlook Thursday through Sunday ...

Thursday through Saturday night:VFR.

Sunday:VFR.

Marine
Forecaster confidence levels...

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term through Wednesday night ... High confidence.

Low risk for a brief waterspout late tonight as a warm front
moves across the waters. Vsby lowered at times in morning fog
and scattered thunderstorms, then improving before second round
of thunderstorms in the afternoon.

Some risk for small craft advisories along the southern outer
coastal waters due to marginal 25 kt gusts and 5 ft seas.

Outlook Thursday through Sunday ...

Thursday: winds less than 25 kt. Areas of seas approaching
5 ft.

Thursday night: winds less than 25 kt. Seas locally approaching
5 ft.

Friday through Sunday: winds less than 25 kt.

Box watches warnings advisories
Ct... None.

Ma... None.

Ri... None.

Marine... Small craft advisory from noon to 8 pm edt Wednesday for
anz232-233.

Small craft advisory from noon Wednesday to 11 am edt Thursday
for anz235-237.

Small craft advisory from 9 am Wednesday to 7 am edt Thursday
for anz250.

Small craft advisory from 9 am Wednesday to 6 pm edt Thursday
for anz254>256.

Synopsis... Belk frank
near term... Frank belk
short term... Belk
long term... Frank
aviation... Belk frank
marine... Belk frank


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BHBM3 - 8443970 - Boston, MA 7 mi34 min 67°F 1015.6 hPa
44013 - BOSTON 16 NM East of Boston, MA 14 mi74 min E 7.8 G 9.7 67°F 68°F4 ft1015.6 hPa (-0.8)66°F
44029 - Buoy A0102 - Mass. Bay/Stellwagen 23 mi60 min ESE 7.8 G 9.7 68°F 68°F5 ft1014.4 hPa
44018 - SE Cape Cod 30NM East of Nantucket, MA 42 mi74 min E 5.8 G 7.8 66°F 4 ft1016.4 hPa (-0.9)66°F
FOXR1 - 8454000 - Providence, RI 44 mi34 min S 5.1 G 7 68°F 73°F1015.5 hPa
PVDR1 44 mi34 min ESE 4.1 G 5.1 68°F 1016.5 hPa65°F
FRVM3 - 8447386 - Fall River, MA 44 mi34 min 68°F 74°F1016.8 hPa
FRXM3 45 mi34 min 67°F 63°F
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA 45 mi34 min E 6 G 8 69°F 1016.3 hPa
44090 46 mi64 min 69°F1 ft
IOSN3 - Isle of Shoals, NH 47 mi124 min ESE 12 G 14 66°F 1016 hPa (-1.0)63°F
CPTR1 - 8452944 - Conimicut Light, RI 47 mi34 min E 9.9 G 12 68°F 75°F1016 hPa

Wind History for Providence, RI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Boston, Logan International Airport, MA7 mi70 minESE 810.00 miPartly Cloudy68°F63°F84%1016.3 hPa
East Milton, MA13 mi68 minESE 6 mi62°F62°F100%1017.4 hPa
Norwood, Norwood Memorial Airport, MA16 mi71 minN 010.00 miFair65°F63°F93%1016.2 hPa
Beverly, Beverly Municipal Airport, MA18 mi71 minE 310.00 miPartly Cloudy65°F63°F93%1015.7 hPa
Marshfield Airport, MA20 mi69 minESE 510.00 miA Few Clouds68°F66°F94%1016.3 hPa
Laurence G Hanscom Field Airport, MA22 mi68 minESE 510.00 miMostly Cloudy66°F60°F81%1017.3 hPa

Wind History from BOS (wind in knots)
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Last 24hrNE5NE5NE7--N7N6N7N5N6N8NE7NE10E10E9E8E11E9E8E11E8E9SE9SE8SE6
1 day agoNE12NE12NE11N8N7N9N7N9N10N9NE11NE12NE14NE15
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2 days agoNE14NE9
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Tide / Current Tables for Lovell Island, The Narrows, Boston Harbor, Massachusetts
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Lovell Island
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Tue -- 01:29 AM EDT     Moonset
Tue -- 02:16 AM EDT     1.04 feet Low Tide
Tue -- 05:57 AM EDT     Sunrise
Tue -- 08:33 AM EDT     8.07 feet High Tide
Tue -- 02:24 PM EDT     1.65 feet Low Tide
Tue -- 04:39 PM EDT     Moonrise
Tue -- 07:35 PM EDT     Sunset
Tue -- 08:47 PM EDT     9.07 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.71.91.11.223.55.377.987.36.14.52.71.71.82.63.95.77.68.89.18.57.3

Tide / Current Tables for Boston Harbor, Massachusetts Current
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Boston Harbor
Click for Map
Tue -- 01:29 AM EDT     Moonset
Tue -- 02:07 AM EDT     0.00 knots Slack
Tue -- 05:28 AM EDT     1.01 knots Max Flood
Tue -- 05:57 AM EDT     Sunrise
Tue -- 08:33 AM EDT     -0.00 knots Slack
Tue -- 12:22 PM EDT     -1.16 knots Max Ebb
Tue -- 02:24 PM EDT     0.00 knots Slack
Tue -- 04:39 PM EDT     Moonrise
Tue -- 05:49 PM EDT     1.01 knots Max Flood
Tue -- 07:35 PM EDT     Sunset
Tue -- 08:40 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1.3-0.9-0.10.50.710.90.60.2-0.2-0.5-0.8-1.1-1-0.30.40.70.910.70.3-0.1-0.5-0.8

Weather Map and Satellite Images
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wmap_A
GOES Local Image of Northeast    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Boston, MA (22,6,7,8)
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Ground Weather Radar Station Boston, MA
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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.